Initial value problem of Oshida-Rule

Let mm be a positive integer, let ee denote the distinguished initial vector, and let hh, hh', f1f_1, and H245=LSH_{245}=L\circ S be the maps defined above, with uRmaxnu\in\mathbb{R}^{n}_{\operatorname{max}}. Initial value problem of Oshida-Rule. For every non-negative integer nn and every vector uRmaxnu\in\mathbb{R}^{n}_{\operatorname{max}} with ueu\neq e,

hhf1f12m1(u)H245H2452m1hh(u).h' \circ h \circ \underbrace{f_1\circ\cdots\circ f_1}_{2m-1}(u)\neq \underbrace{H_{245}\circ\cdots\circ H_{245}}_{2m-1}\circ h'\circ h(u).

Equivalently,

{uRmaxn|hhf1f12m1(u)=H245H2452m1hh(u)}={e}.\left\{u\in\mathbb{R}^{n}_{\operatorname{max}}\mathrel{\middle|}h'\circ h\circ\underbrace{f_1\circ\cdots\circ f_1}_{2m-1}(u)=\underbrace{H_{245}\circ\cdots\circ H_{245}}_{2m-1}\circ h'\circ h(u)\right\}=\{e\}.

This is the proposed uniqueness statement for the initial value of the Oshida cellular-automaton rule. The supplied text gives no evidence that the conjecture has been proved or disproved.

Sources & referencesView supporting material

Primary source

Yohei Oshida, “Ghost-OSD Method on Numerical Max-Plus Algebra”, arXiv:2407.10682 (2024).

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